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              Abstract
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 We study growth rate of product of sets in the Heisenberg group over finite fields and
 the complex numbers. More precisely, we will give improvements and extensions of
 recent results due to Hegyvári and Hennecart (2018).
  
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              Keywords
              
                finite fields, matrix, sum-product estimates, incidences
               
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              Mathematical Subject Classification 2010
              
                Primary: 11T06, 11T55, 20G40
               
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              Milestones
              
                Received: 10 August 2019
               
              
                Revised: 21 November 2019
               
              
                Accepted: 21 November 2019
               
              
                Published: 29 April 2020
               
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